MM74HC257J
ActiveMUX, HC/UH SERIES, 2 LINE INPUT
MM74HC257J
ActiveMUX, HC/UH SERIES, 2 LINE INPUT
Description
General part information
74HC257 Series
The ’HC257 and ’HCT257 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select Input (S). The Output Enable input (OE\) is active LOW. When OE\ is HIGH, all of the outputs (1Y-4Y) are in the high impedance state regardless of all other input conditions.
Moving data from two groups of registers to four common output buses is a common use of the 257. The state of the Select input determines the particular register from which the data comes. It can also be used as a function generator.
The ’HC257 and ’HCT257 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select Input (S). The Output Enable input (OE\) is active LOW. When OE\ is HIGH, all of the outputs (1Y-4Y) are in the high impedance state regardless of all other input conditions.
Technical Specifications
Parameters and characteristics for this part
| Specification | MM74HC257J |
|---|---|
| Circuit | 4 x 2:1 |
| Current - Output High | 7.8 mA |
| Current - Output Low | 7.8 mA |
| Independent Circuits | 1 |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -55 °C |
| Type | Multiplexer |
| Voltage - Supply (Maximum) | 6 V |
| Voltage - Supply (Minimum) | 2 V |
| Voltage Supply Source | Single Supply |
Pricing
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